Question

Twenty men can paint a building in 15 days. How many days will it take 30 men
to finish the same building?

Answer 1

Answer:

the will use 2 days 6 hours

Step-by-step explanation:

of you take proportion then

MEN DAYS TO PAINT

20 15

30 x

it is in direct proportion

so,

M:M: : D:D

20:30: : 15:x

product of mean =product of extreme

30*15=20x

45=20x

x=45

20

x=2.25 days

Answer 2

Answer:

1 man paint a building= ( 15×20 )

=300days

so,

30 men finish the building=300 /4

Therefore,

30 men complete the building in 75 days.